64281677 has 2 divisors, whose sum is σ = 64281678. Its totient is φ = 64281676.

The previous prime is 64281673. The next prime is 64281697. The reversal of 64281677 is 77618246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63138916 + 1142761 = 7946^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 64281677 - 2² = 64281673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64281673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32140838 + 32140839.

It is an arithmetic number, because the mean of its divisors is an integer number (32140839).

Almost surely, 2^64281677 is an apocalyptic number.

It is an amenable number.

64281677 is a deficient number, since it is larger than the sum of its proper divisors (1).

64281677 is an equidigital number, since it uses as much as digits as its factorization.

64281677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 64281677 is about 8017.5854844211. The cubic root of 64281677 is about 400.5859682671.

The spelling of 64281677 in words is "sixty-four million, two hundred eighty-one thousand, six hundred seventy-seven".